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Topics - defender_of_truth

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Flat Earth Debate / a simple experiment that disproves flat earth
« on: March 28, 2019, 09:27:56 AM »
Put a long nail in a board slightly, sticking up so it casts a shadow. get it as straight as possible. Then place the board on the ground and level it. Mark the shadow every hour for a whole day. The next day, mount the board on an equatorial mount telescope so that the shadow aligns with one of the marks. Align the equatorial mount and then spin the assembly. The shadow will track correctly and the marks will be 15 degrees apart. This is something anyone can do on a low budget, and it is inconsistent with any flat earth models or theories. You can build your own equatorial mount with some boards and a segment of pipe.

Flat Earth General / A flat earther with a telescope
« on: July 15, 2018, 05:04:33 PM »
I sent an entry level telescope to my buddy who is struggling with this conspiracy, but he hasnít even taken it out of the box after nearly a month. I guess that pretty much sums up the position of flat earthers. Itís not for a lack of time either. If he would just watch one less 2h YouTube video per day...

Flat Earth Debate / Formal debate challenge
« on: June 29, 2018, 11:48:15 AM »
I would like to openly challenge the site admin, John Davis, to a formal debate. The terms of the debate will be agreed upon by both parties before we begin.

Flat Earth General / All at once
« on: June 19, 2018, 12:58:19 PM »
My hair is still wet from the swim I just took in the Ųresund straight. Dipped in from the MalmŲ side near turning torso, and a view of all of the conspiracies was visible at once! Copenhagen was slightly below the horizon, the sun was still shining past 9pm, the moon was high in the sky and very spherical looking, contrails in the air, etc, etc. Flat earthers just need to get out more...

Flat Earth Debate / Just one truth?
« on: May 12, 2018, 12:13:16 AM »
My challenge to any flat earther is this:

Provide just one piece of physical evidence that could show a flat earth, and test it.

I bet you cannot find one true statement about the physical world and prove it.

Flat Earth Debate / Force=mass x acceleration
« on: April 27, 2018, 05:59:22 PM »
Do flat earthers refute this very useful formula? I donít mean in a theoretical physics kind of way, but in a practical sense.

Flat Earth Debate / god of the gaps
« on: April 26, 2018, 08:07:52 AM »
I think the whole flat earth idea comes from a clash between science and religion. The gap that was once there, is now decidedly gone. If you choose to believe or not believe in a god, it does not depend on scientific understanding or lack thereof. If you chose to fill the gaps in scientific understanding with belief in a higher being, then your 'god' must get smaller and smaller as scientific understanding grows. A belief in god which is in harmony with scientific understanding is the only logically sound religious belief system. Do you want to back to doing rain dances?

Flat Earth Debate / Measurements
« on: April 17, 2018, 08:18:22 PM »
Have any flat earthers out there ever measured anything? I mean anything at all. Measurements are quantifiable and can be compared, repeated, used in other calculation, etc.

Propaganda and conspiracy cannot defeat measurement. If you can measure something, you should.

Post here any measurements!

Flat Earth General / How many FE-ers remain?
« on: April 13, 2018, 08:49:02 PM »
This is just a check-in to see who is left that claims to still believe in FE. Seems to me that few remain.

Flat Earth Debate / Emotion
« on: March 06, 2018, 09:55:17 AM »
Letís have a discussion about the emotions related to the belief in a flat earth and think critically about those, so letís put aside the science of the shape of the earth for the sake of this discussion. I suppose it wouldnít be that different than the psychology of any other conspiracy, but letís see what we find. I want to keep this discussion fair and polite, because we wonít get anywhere exchanging insults.

I want to start by asking flat earthers a few specific questions:

1. What makes you WANT to believe that the earth is flat?

2. Why would you tend to distrust experts in specific scientific fields?

3. Why do you think you are different, that you can discern something that most cannot?

4. Do you believe you can admit when you are wrong about something?

Flat Earth Debate / Bendy water
« on: February 24, 2018, 02:52:02 AM »
I was thinking about all the different scenarios where water is curved:

Meniscus in a container

Parabolic shape when spun or swirled

bent by static electricity

Surf and waves

Tide (level is always changing, so itís never flat)

Droplets in air

Droplets on a surface

Droplets submerged in oil

This is just a piece of a long list of examples where water never finds its (flat) level.

Flat Earth General / Denmark and corruption
« on: February 12, 2018, 06:27:27 AM »
I just spent a few days sightseeing in Denmark, and I can say that I was surprised to see first hand how deep the conspiracy runs! In the town of HelsingÝr, is the Danish National Maritime Museum, and here you can see a celestial globe from 1636. Along with that are various other navigation tools that predate the USA and nasa, etc. they have done a great job producing these fake museum artifacts for display! Now Denmark is supposedly the least corrupt country, so you can imagine that it is a big surprise. No longer do we need to blame nasa, it is Denmark!

Flat Earth General / Elon Musk is fake
« on: February 07, 2018, 01:11:30 PM »
So, I'm thinking that Elon Musk is actually an AI cyborg. What do you guys think? I have not personally seen him, but something seems off!

Flat Earth Debate / The secret's out
« on: December 09, 2017, 10:50:27 PM »
Even if there was a big conspiracy created to hide the true shape of the earth, we can say now that the secret is out. References to flat earth in mainstream society are a regular occurrence now. If it were true that the earth is flat, why aren't people coming by the millions to join this cause? There are maybe 5 active flat earthers on this site.

Flat Earth Debate / trigonometry
« on: December 05, 2017, 02:30:29 PM »
Somewhere on the earth right now, the sun is directly overhead. Some far distance away from there, the sun is 5 degrees above the horizon. If you go halfway between those two points on a flat earth, the sun should be roughly 10 degrees above the horizon. Instead, you'll find it to be much higher in the sky than 10 degrees. In my specific case: this time of year, the sun is about 5 degrees above my horizon when it is directly over Madagascar. Somewhere around halfway is the Egypt Sudan border, where the sun is 40 degrees above the horizon at the same time. Furthermore, my measurement would indicate the sun is 500 miles up, but an observer in the halfway point would calculate the sun at 2400 miles up. Check out or and find that they accurately state the sun and moon positions for all locations and times.

Bottom line:
Learn basic trigonometry, and realize that the earth isn't flat.

Flat Earth Debate / childhood science toys
« on: November 29, 2017, 01:29:20 PM »
Science was part of my life from an early age, as I imagine it was for many others. It occurred to me that many of the debates we enter into on this forum can be explained by simple childhood toys or experiments. Here's my list so far, of interesting science toys for children (and the young at heart). Flat earthers, go play!

in no particular order:

  • crystal radio
  • chemistry set
  • gyroscope
  • spinning top
  • magnifying glass
  • levitron
  • magnetic levitator
  • battery electromagnet
  • magnets
  • model rockets
  • telescope
  • microscope
  • plasma lamp
  • slinky
  • drinking bird
  • potato battery
  • water electrolysis
  • prisms
  • newtons cradle
  • pet tornado
  • Galileo thermometer
  • mirror hologram
  • balancing bird
  • world's simplest motor
  • flywheel car
  • pendulum wave
  • Euler's disk
  • boomerang
  • yo-yo
  • silly putty
  • pogo stick
  • slip-n-slide
  • superball
  • stretch armstrong
  • balsa glider
  • pinewood derby car
  • electric train

Flat Earth Debate / Lack of motive
« on: November 25, 2017, 07:36:43 AM »
All conspiracies have a motive, and that motive is almost exclusively money and/or power. I don't see the motive for flat earth conspiracy. Based on the number of people that would need to be in on it, that there wouldn't be enough money to keep people quiet.

Flat Earth Debate / Scientific method
« on: November 15, 2017, 03:34:15 AM »
I see this as a breakout topic from the  Denspressure vs. Reality thread, to dig deeper with scepti regarding the scientific method.


We value testing, equations, observations, and predictions differently than you, and I want to hear your opinions. You've got the idea generation down pat, but where do you take it from there?

Flat Earth General / Help me understand
« on: November 11, 2017, 04:58:17 AM »
I genuinely want to understand why flat earth believers are so resistant to performing experiments for themselves. Please flat earthers, I'm eager to hear your perspective on this.

Flat Earth Debate / Animated proof that the earth isn't flat
« on: November 03, 2017, 01:00:18 PM »
I created an animation showing the azimuth and elevation angles of the sun at UTC 20:00 Nov 3, 2017 which is the same time as this posting. So, these lines represent the orientation of the sun in each location. All of the lines converge when placed on the globe earth but on the flat earth map, they do not.

Buenos Aires
Mexico City
Esperanza Base

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The Lounge / About me
« on: November 01, 2017, 04:25:46 AM »
I thought it would be good to provide some information about myself.

I have a BSME from an ABET accredited university. I've worked in aerospace, power, and biomedical fields. My work is mostly product design but I've also been a process engineer and a quality engineer. I currently live and work in two countries 7 time zones apart and travel frequently on commercial jets. I have also been granted one patent.

I'm a thinker, but rooted in practicality. I find it disturbing that anyone can sustain a belief that the earth is flat, and am here to help those who are able to understand. I wouldn't have even engaged in this topic, except that a personal friend has been affected by this nonsense.

Flat Earth Debate / Open challenge to all flat earthers
« on: October 31, 2017, 05:03:44 PM »
Perform an experiment yourself and post the results in this thread.

Flat Earth Debate / Montage of small maps
« on: October 30, 2017, 08:04:11 PM »
I was wondering if anyone has created a montage of smaller maps, say the USA by putting together the individual state maps. This would be a good way to demonstrate roundness, because nowhere on the earth can a bunch of regional maps that are scaled equally fit together on a larger flat map.

Flat Earth Debate / Farthest from home?
« on: October 26, 2017, 08:50:29 AM »
What's the farthest from home that any flat earthers have been? The two farthest points that I've been to are about 5500 miles apart (great circle distance). I will do more travelling in the near future, so if anyone wants any photos of shadows, or flights timed, or whatever else you can think of, I'll try to provide what you request!

Flat Earth Debate / high altitude balloon photos, barrel distortion
« on: October 23, 2017, 01:25:31 AM »
I went on a search for photos that show the curve from high altitude, and the best independent photos are from high altitude balloons. Any and all high altitude photos show the curvature of the earth, even those which are claimed to be using wide-angle lenses for deception. Using a photo editing software, you can remove the barrel distortion from any photo taken with a wide-angle lens to show the natural curvature of the horizon at high altitude. There's a catch: you need a straight edge to be in the image to use as a reference. You could also use any wide-angle image that does not include a straight line, provided that the horizon passes through the center of the image.

Using the infamous "little piggy" video as a reference, you can see the curvature in every single frame!

Flat Earth Debate / SYD to SCL and flight range
« on: October 14, 2017, 09:50:14 AM »
Hi all, I'm new to this forum and I'll be upfront about why I'm here. It is because someone managed to convince my long-time best friend to give some credibility to the "flat earth theory", although he hasn't completely renounced his belief in a round(ish) earth. I'm perturbed about this whole internet sensation, and here to help anyone else who is being led astray by this clearly false "theory". I understand there are psychological underpinnings to the conspiracy theory game, so I will try to stick to verifiable facts to help those who are able to understand.

I've gone through a systematic approach with my friend to help him think critically about one small topic in-depth, so as not to get bogged down with the plurality of subjects. For this, I've chosen the Sydney to Santiago non-stop route which I think is rather new (2015?). The steps are as follows:

1. The flight exists
2. The flight starts and ends at the locations specified
3. Normal everyday people take this flight: business, vacation, etc.
4. The elapsed time is as specified, about 12.5 hours
5. The flight uses the specified plane, 747-400
6. 747-400 specifications are as stated: range, takeoff weight, etc.
7. FE theory states the equator is the same length as the RE equator
8. FE and RE equator are both 24,870 miles long
9. FE and RE equator are both 7,918 miles in diameter (pi*d=dia)
10. FE shortest distance from SYD to SCL is roughly 10100 miles
11. RE shortest distance from SYD to SCL is roughly 7066 miles
12. The speed of sound is 661mph at 35,000 feet

The distance from SYD to SCL on FE can't happen for at least 2 reasons:
13. The speed would be faster than mach 1
14. The range exceeds specification

Please respond back with a specific number, or something scientific with numbers and facts. Let's leave opinions out of this discussion.


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